BTE hearing aid



FIG. 1 is a perspective view of a BTE hearing aid;

FIG. 2 is a rear view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines in FIGS. 3 and 6 represent the bounds of the claim and form no part of the claimed design. 

CLAIM The ornamental design for a BTE hearing aid, as shown and described. 